Improvement in time-locks



W. KOOK & J. L. HALL.

Time-Lock.

No. 214,781. Patent ed April 29,1879.

UNITED STATES PATENT O EIGE,

WILLIAM KOOK AND JOSEPH L. HALL, OF CINCINNATI, OHIO; SAID KOOK ASSIGNORTO SAID HALL.

IMPROVEMENT IN TIME-LOCKS.

Specification forming part of Letters Patent No. 214.781, vdated April29, 1879 application filed March 17, 1879.

To an whom it may concern:

Be it known that we, WM. K001i and JosEPH L. HALL, of Cincinnati, in thecounty of Hamilton and State of Ohio, have invented certain Improvementsin Looks for Safes, 860., of which the following is a specification.

This invention consists in a weighted lever so applied to acombination-lock as to hold the dogging-bar of the lock up, and preventthe bolt from being retracted even when the tumblers are set on theirproper combination, and the arm of the angle-bar enters the notches ofthe tumblers, thereby preventing the look from being opened until thedogging-bar is released from the action of said lever; and, sec- 0nd, inthe combination therewith of a time attachment arranged to operate onsaid lever at a predetermined time, and thereby release the dogging-bar,so that the lock can then be opened or operated in the usual manner, allas hereinafter more fully described.

Figure 1 is an inside face view of a portion of a safe or vault door,showing our improvements applied thereto, the cap-plate of the lockbeing removed to show the working parts. Fig. 2 is a similar view,showing our invention applied to a lock of different construction.

In the drawings, L represents the case of an ordinary combination-lock,in which E is the locking-bolt, engaging under a lug, F, on a diskattached to the arbor or handle that moves the bolt-work, of which B isthe connecting-bar, these parts being in common use and well known.

The lock shown in Fig. l is of ordinary construction, with the exceptionthat the slot in the angle-bar O is widened at its front end, as shownat a, so that said angle-bar is free to move downward far enough to letits arm I fall into the notches in the tumblers without drawing down thedogging-bar R, which is thus'left with its rear end bearing against thelug n, thus dogging or holding the bolt E fast, so that the lock cannotbe opened. In order to hold the dogging-bar R in' this position when theangle-bar is down, we provide abar, A, the rear end of which is weightedor made heavier, and which has its front end bent at an angle, so as toprotrude througha hole in the top of-the case L, which bar is pivoted inthe position shown in Fig. 1, so that its front arm will pass under thepin 0, which is made a' little longer than usual, so as to extend outover the top of said bar A. The result of this construction andarrangement is, that even if the combination on which the tumblers areset should be ascertained by burglars or other unauthorized persons theycould not open the lock, for the reason that when the tumblers areproperly set and the angle-bar arm 1 drops into the notches thereof thedogging-bar R will still be held up by the front arm of the bar A, andthus prevent the bolt E from being withdrawn, the pivoted bar A thusoperating as an automatic dogging device.

It will be seen that whenever the an gle-bar is raised its arm I willstrike against the lever A, in rear of its pivot, thereby throwing itsfront arm down away from the pin 0, and that consequently the lever Ahas no eifect upon the lock except when the tumblers are gated,

when it automatically operates to hold up the dogging-bar R. While thisprevents the possibility of picking or opening the lock it would alsoprevent it from being opened by the parties in charge, and it thereforebecomes necessuitable construction, preferably that patented to H. GrossFebruary 8, 1876, No. 173,121, of which T in the drawings represents thearm or lever, which, in this case, is arranged with its free end overthe point of the automatic lever A, as shown, so that at the proper timethisv arm T will be made to bear upon the end of lever A, where itprotrudes through the case L, and by pressing down on said lever forcesit away from the pin 0, thereby leaving the dogging-bar It free to dropdown away from thelug n whenever the arm of the anglebar enters thenotches of the tumbler. While the lever A is thus held out of action bythe arm 'T of the time attachment the lock is free to be operated in theusual manner, the same as though the lever A were not present; butwhenever the time attachment is set; and the door closed and locked, thelever A again comes into operation, and will prevent the lock from beingopened, as before described.

In both Figs. 1 and 2 the automatic dogging-lever A is shown applied insuch a manner as to act directly upon the dogging-bar R of the look; butit is obvious thatin the style of locks represented in Fig. 1, and inwhich the dogging and angle bars are made separate, the automatic leverAmay be so applied as to operate upon the an gle-bar 0 instead of on thebar R, the result being the same, because so long as the fence of theangle-bar O is prevented from entering the notches of the tumblers it isobvious that the lock cannot be opened, for two reasons-first, becausethe (logging-bar will be held up against the lug by the angle-bar; and,second, because the hook on the arbor cannot engage with the bar thatretracts the bolt of the look.

It is obvious that instead of having the point of lever A protrudingthrough the'ease it may be made shorter, and the end of arm T be made toreach through the case, so as .to bear on said lever A, the result beingthe same.

In applying the improvement to that class of locks shown in Fig.2, andin which the dogging and angle bars are both combined in one, the leverA is provided with a laterallyprojecting pin, 1", which engages under alug, i, on the side of the bar It, in order to hold the latter upagainst the lug a. In this case the lever A has a lateral arm, at, whichbears upon the tumblers in the same manner as the arm lof the angle-bar,so that whenever the tumblers are not set up or gated the rear end oflever A is held up, thereby depressing its front arm, and preventing itfrom operating on the bar It, this latter at such times being held up byits arm I resting on the periphery of the tumblers, as represented inFig. 2. In

this case'the tumblers are provided with a secondary notch, 20, intowhich the arm 25 of lever A drops whenever the tumblers are gated or setup, so that, although at such times the main notches of the tumblers arein a position to let the an gle-bar R drop down away from the lug a,still it is prevented from doing this by the fact that it is held up bythe lever A, the front arm of which is raised as its arm t falls intothe notches w, thus causing its pin 1' to rest against the lug 6 of thebar R.

It will thus be seen that the pivoted lever A acts the same as in Fig.1-that is to say, in both cases it has no effect except when thetumblers are set up or gated, but, that whenever the tumblers are set onthe proper combination for opening the look it automatically operates tohold up the dogging-bar of the lock, and thereby prevents the latterfrom being opened until said lever A is thrown out of operation by thearm T of the time attachment, which is applied the same as when the lookshown in Fig. l is-used.

The lever A may be pivoted upon the outside of the look, as indicated bythe dotted lines in Fig. 1, the arm t and pin 1 working through slotscut in the face-plate for that purpose. It may also be so applied withthe lock shown in Fig. 1 by providing the lever A with an arm arrangedto protrude through a hole in the face-plate in such a position as to bestruck by the arm 1 when the angle-bar is raised, and also a similar armto reach inward under the pin 0.

By this arrangement the automatic dogging-lever A can be readily appliedto looks already in use; but where the locks are to be manufactured anewwith our improvement, the lever A will preferably be placed within thecase, thereby preventing the necessity of making any openings throughthe cap-plate.

It is obvious that instead of the weight on the rear arm of the lever Aa spring may be used, and made to operate the same; but we prefer theplan shown, because it is simpler, and less liable to get out of order.

We are aware that a patent was granted to J. L. Hall, July25, 1876, No.180,227, in which a dogging-lever is shown, so applied as to dog thelock-bolt until released by a time attachment, and said dogging-lever isalso shown as holding up the doggin g-bar of the look by engaging undera pin or projection on the an glebar; but in that the angle-bar is notfree to be moved independently of the dogging-bar, and besides theadditional dogging-lever used in that case is always in operation untilreleased by the time attachment, whether the tumblers be set or not;whereas in this the dogging-lever A does not operate upon the lock untilthe tumblers are set, when it automatically comes into operation.

Having thus described our invention, what we claim is 1. The combinationof the dogging-bar R of a permutation-lock and the lever A, automatically acting on said bar to continue its dogging action even whenthe tumblers are set on their proper combination, substantially as andfor the purpose set forth.

2. In combination with. the dogging-bar R of a permutation-lock, thelever A, automatically acting upon said bar to continue its doggingaction when the combination is set up, and a time attachment arranged tothrow and hold said lever out of operation at a predetermined time,snbstantially as and for the purpose set forth.

WM. KOOK. JOSEPH L. HALL. Witnesses CHARLES BIRD, E. O. HALL.

